Letter to Hong Kong
- Joer: 2018
- Land: South Korea
- Genre: Documentary, Mystery
- Studio: Blockberry Creative, Digipedi
- Schlësselwuert: k-pop, short film, music
- Direkter: Moon Seokho, Seong Wonmo, DIGIPEDI
- Besetzung: Jeon Hee-jin, Kim Hyun-jin, Cho Ha-seul, Wong Ka-Hei, Jeong Jin-sol